Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88a16aaac303afe…

MALICIOUS

PDF

120.2 KB Created: 2020-04-29 15:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 1f44d0373309acf00b150c5a35cd3170 SHA-1: 7af4f852a9a2a0f5413300314e8dce66d5267875 SHA-256: f88a16aaac303afe971583551ad708913076d5ce9b1d0ef520c5cea23b6564d6
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a high likelihood of malicious intent, likely to drive traffic or host malicious content. The presence of urgency lures in the document body further supports a phishing or scam attempt. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8964

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://behrensvo.com/uploads/1/3/1/4/131453005/131453005.html#idsa+dm+foot+infection+guidelines PDF link annotation
    • http://4eyesdesignz.com/uploads/1/3/0/9/130969545/d45486dcfdd01df.pdfIn PDF document text
    • http://ashlandunitplansethream.com/uploads/1/3/0/8/130873796/9807272.pdfIn PDF document text
    • http://hanaresorts.com/uploads/1/3/0/5/130544257/salijokuve.pdfIn PDF document text
    • http://photoframerpro.com/uploads/1/3/0/6/130604407/9f92bbbf6a28496.pdfIn PDF document text
    • http://lightningtheload.com/uploads/1/3/0/5/130541846/fotexuwugad_lekurudox_xowolululipi.pdfIn PDF document text
    • http://betreutes-eck.com/uploads/1/3/0/5/130550703/3773061.pdfIn PDF document text
    • http://achristiangift.com/uploads/1/3/1/3/131383651/ed4e09c11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FED 9396 bytes
SHA-256: 244567954a29d7e8b73535c8ed92dd3eab3ec82ab0748b853360b7d3f92bba51
font_01_sfnt_off0001b35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B35E 2892 bytes
SHA-256: 7b3b0ebea948f0e0e8c5824d235fe3e72c6c4cf7cebed0ccaa673ff467ad646f
font_02_sfnt_off0001bda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BDA0 16036 bytes
SHA-256: ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4

Open this report in the interactive analyzer, or submit your own file for analysis.